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Peter W Fritsch - One of the best experts on this subject based on the ideXlab platform.
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A New Species of Styrax (Styracaceae) from Peru
Novon, 2017Co-Authors: Peter W FritschAbstract:A new species of Styrax L. from the region of Cusco, Peru, is described and illustrated. Styrax excelsus P. W. Fritsch belongs to Styrax subser. Foveolaria (Ruiz & Pav.) P. W. Fritsch through its flowers shorter than or up to 10 mm; number of stamens equal to the number of petals (five); near-basal placentation; three ellipsoid ovules per flower (i.e., one per carpel); and presence of only female flowers, which suggests a gynodioecious breeding system. It is similar to S. maninul B. Walln. but differs by its taller habit; abaxial surface of the leaf blade with ferruginous, stellate trichomes that are generally smaller but with more arms and prominent reticulate tertiary veins; acute or slightly acuminate leaf apex; shorter inflorescences with fewer flowers; a longer corolla; and narrower staminodial pseudoanthers. The new species is only known from the type.
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two new species of Styrax styracaceae from south america
Novon, 2015Co-Authors: Peter W FritschAbstract:Two new species of Styrax L. from South America are described and illustrated. Styrax macarenensis P. W. Fritsch, endemic to the Serrania de la Macarena in the department of Meta, Colombia, is similar to S. rigidifolius Idrobo & R. E. Schult. but differs in its longer petioles, more rounded leaf blades with denser and larger ferruginous trichomes abaxially, more frequently and more deeply bifurcating leaf blade secondary veins, and drupes without an apical ring. Styrax prancei P. W. Fritsch, endemic to the Serra do Araca in Amazonas State, Brazil, is similar to S. guaiquinimae (Maguire & Steyerm.) P. W. Fritsch but differs in its more narrowly elliptic to oblanceolate to elliptic leaves with nine to 12 secondary veins on each side of the midvein, 2- to 4-flowered inflorescences, and smaller flowers. Both species are known only from their types.
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multiple geographic origins of antillean Styrax
Systematic Botany, 2009Co-Authors: Peter W FritschAbstract:The phylogenetic relationships within Styrax series Valvatae were estimated with DNA sequence data from the internal transcribed spacer region of nuclear ribosomal DNA to test hypotheses bearing on the historical biogeography of the Antilles. The results provide evidence for three dispersal events within Styrax to the Antilles, one from southern North America, the other two from South America. The data do not support a strict Greater Antillean vicariance scenario for Styrax. Vicariance between the Greater Antilles and southern North America without immediate prior dispersal would require a more basal position of Styrax ochraceus than that recovered, although low branch support values in the relevant portion of the tree do not preclude this possibility. Dispersal of Styrax from South America to the Greater Antilles could have proceeded across oceanic barriers, or more likely through GAARlandia. Styrax obtusifolius in Cuba and Hispaniola and the strictly South American Foveolaria clade have evolved small flowers and the gynodioecious condition independently. The predominance of microscopic pollinators in the Cuban fauna may have impelled the evolution of small flowers in Styrax obtusifolius. The data suggest that the Antilles have played little if any role in the intercontinental dispersal of Styrax.
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a revision of the imbricate group of Styrax series cyrta styracaceae in asia
Annals of the Missouri Botanical Garden, 2003Co-Authors: Yelin Huang, Peter W FritschAbstract:Several taxonomic treatments of Styrax (Styracaceae) exist in regional floras of Asia, but the Asian species of the genus have not been comprehensively revised since 1907. To help rectify this, we conducted a taxonomic revision of the Asian species of Styrax series Cyrta with imbricate corolla aestivation. Our revision comprises 17 species with a combined distribution from Japan south to Sumatra and west to Nepal. The circumscriptions of the heretofore poorly defined species S. hookeri and S. serrulatus are clarified. Styrax agrestis var. curvirostratus is elevated to the species level, and lectotypes are selected for S. duclouxii, S. floribundus, S. hemsleyanus, S. hookeri, S. hookeri var. yunnanensis, S. hypoglaucus, S. japonicus, S. limprichtii, S. macranthus, S. obassia, S. perkinsiae, S. serrulatus var. latifolius, S. shiraianus, S. supaii, and S. wilsonii. Keys, descriptions, and distribution maps are provided for all species.
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phylogeny and biogeography of the flowering plant genus Styrax styracaceae based on chloroplast dna restriction sites and dna sequences of the internal transcribed spacer region
Molecular Phylogenetics and Evolution, 2001Co-Authors: Peter W FritschAbstract:Abstract Phylogenetic relationships within the flowering plant genus Styrax were investigated with DNA sequence data from the internal transcribed spacer (ITS) region of nuclear ribosomal DNA (nrDNA) and with chloroplast DNA restriction site data from the genes trnK, rpoC1, and rpoC2. The data sets from each genome were analyzed separately and in combination with parsimony methods. The results strongly support the monophyly of each of the four series of the genus but provide little phylogenetic resolution among them. Reticulate evolution may at least partly explain discordance between the molecular phylogenetic estimates and a prior morphological estimate within series Cyrta. The historical biogeography of the genus was inferred with unweighted parsimony character optimization of trees recovered from a combined ITS and morphological data set, after a series of combinability tests for data set congruence was conducted. The results are consistent with the fossil record in supporting a Eurasian origin of Styrax. The nested phylogenetic position of the South American members of the genus within those from southern North America and Eurasia suggests that the boreotropics hypothesis best explains the amphi-Pacific tropical disjunct distribution occurring within section Valvatae. The pattern of relationship recovered among the species of section Styrax ((western North America + western Eurasia) (eastern North America + eastern Eurasia)) is rare among north-temperate Tertiary forest relicts. The monophyly of the group of species from western North America and western Eurasia provides qualified support for the Madrean–Tethyan hypothesis, which posits a Tertiary floristic connection among the semiarid regions in which these taxa occur. A single vicariance event between eastern Asia and eastern North America accounts for the pattern of relationship among intercontinental disjuncts in series Cyrta.
Josette Viano - One of the best experts on this subject based on the ideXlab platform.
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composition of volatile oils of Styrax Styrax officinalis l leaves at different phenological stages
Biochemical Systematics and Ecology, 2006Co-Authors: Ghaleb Tayoub, Isabelle Schwob, Jeanmarie Bessiere, Verornique Masotti, Jacques Rabier, Martine Ruzzier, Josette VianoAbstract:Abstract The volatile oil composition of Styrax officinalis L. leaves was investigated by GC and GC–MS during the phenological cycle of this species in a population growing wild in France. Whatever the analysed stage, yields were low 0.01–0.02%. ( E )-2-hexenal, octanol and geraniol were the main constituents in all these volatile oils. The level of sesquiterpenoids was the highest at the vegetative stage. However, the chemical composition of leaf essential oil was relatively constant during the phenological stage of this tree and 58% of the identified compounds were common at all the analysed oils.
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essential oil composition of leaf flower and stem of Styrax Styrax officinalis l from south eastern france
Flavour and Fragrance Journal, 2006Co-Authors: Ghaleb Tayoub, Isabelle Schwob, Jeanmarie Bessiere, Jacques Rabier, Martine Ruzzier, Veronique Masotti, Jeanphilippe Mevy, Gabriel Girard, Josette VianoAbstract:The essential oil composition of Styrax officinalis L. was investigated by GC and GC–MS for the first time. Oil yields were low, whichever organ was hydrodistilled. Leaf, stem and flower oils consisted of 42.2%, 41.2% and 48.7% of terpenoids, respectively. Among all the identified terpenoids, oxygenated monoterpenes were predominant in all the plant organs. The major compounds in the leaf essential oils were (E)-2-hexenal (17.6%), linalool (11.9%) and geranial (5.5%). Linalool was the major compound (26.4%) in the volatile flower oil, followed by tridecanal (9.8%) and dodecane (9.6%), while α-terpineol (17%) and eugenol (9.9%) were the main compounds in the stem essential oil. Copyright © 2006 John Wiley & Sons, Ltd.
Patricia Mendonca Pauletti - One of the best experts on this subject based on the ideXlab platform.
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development and validation of a high performance liquid chromatography method for quantification of egonol and homoegonol in Styrax species
Biomedical Chromatography, 2012Co-Authors: Ana C G Moraes, Camila Spereta Bertanha, Valeria Maria Melleiro Gimenez, Milton Groppo, Marcio Luis Andrade E Silva, Wilson R Cunha, Ana Helena Januario, Patricia Mendonca PaulettiAbstract:Styrax camporum Pohl, known in Brazil as ‘estoraque do campo’ or ‘cuia de brejo’, has been used in the treatment of gastrointestinal diseases. The therapeutic action of S. camporum has been attributed to the ethyl acetate fraction, although the chemical composition of this fraction has not yet been analyzed. In this study, a high-performance liquid chromatography photodiode array detection (HPLC-PAD) method for analysis of Brazilian Styrax species has been developed. The compounds egonol (1) and homoegonol (2) were found to be present in all the samples investigated by HPLC. These compounds were isolated by open column chromatography followed by preparative TLC, and were identified by 1H NMR. Compounds 1 and 2 were thus proposed as phytochemical markers for Styrax, owing to their biological properties and presence in other Styrax species. The developed method has been validated and successfully applied for quantification of 1 and 2 in S. camporum dried leaves and crude ethanolic extracts from S. ferrugineus and S. pohlii aerial parts. Copyright © 2011 John Wiley & Sons, Ltd.
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Development and validation of a high‐performance liquid chromatography method for quantification of egonol and homoegonol in Styrax species
Biomedical Chromatography, 2011Co-Authors: Ana C G Moraes, Camila Spereta Bertanha, Valeria Maria Melleiro Gimenez, Milton Groppo, Wilson R Cunha, Ana Helena Januario, Márcio Luis Andrade E Silva, Patricia Mendonca PaulettiAbstract:Styrax camporum Pohl, known in Brazil as ‘estoraque do campo’ or ‘cuia de brejo’, has been used in the treatment of gastrointestinal diseases. The therapeutic action of S. camporum has been attributed to the ethyl acetate fraction, although the chemical composition of this fraction has not yet been analyzed. In this study, a high-performance liquid chromatography photodiode array detection (HPLC-PAD) method for analysis of Brazilian Styrax species has been developed. The compounds egonol (1) and homoegonol (2) were found to be present in all the samples investigated by HPLC. These compounds were isolated by open column chromatography followed by preparative TLC, and were identified by 1H NMR. Compounds 1 and 2 were thus proposed as phytochemical markers for Styrax, owing to their biological properties and presence in other Styrax species. The developed method has been validated and successfully applied for quantification of 1 and 2 in S. camporum dried leaves and crude ethanolic extracts from S. ferrugineus and S. pohlii aerial parts. Copyright © 2011 John Wiley & Sons, Ltd.
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triterpenos de Styrax camporum styracaceae
Química Nova, 2002Co-Authors: Patricia Mendonca Pauletti, Vanderlan Da Silva Bolzani, Angela Regina Araujo, Maria Claudia Marx YoungAbstract:Chemical investigation of the leaves of Styrax camporum (Styracaceae) resulted in the isolation of the lignan lariciresinol and six triterpenes: ursolic acid, 2a,3a-dihydroxy-urs-12-en-28-oic acid and mixtures of uvaol and erythrodiol, as well as 3b-O-trans-p-coumaroyl-2a-hydroxy-urs-12-en-28-oic acid and 3b-O-trans-p-coumaroylmaslinic acid. The structures of these compounds were established by spectroscopic analysis. This paper deals with the first report of these compounds in S. camporum.
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nor lignans from the leaves of Styrax ferrugineus styracaceae with antibacterial and antifungal activity
Phytochemistry, 2000Co-Authors: Patricia Mendonca Pauletti, Maria Claudia Marx Young, Angela Regina Araujo, Astrea M Giesbrecht, Vanderlan Da Silva BolzaniAbstract:Abstract Chemical examination of the leaves of Styrax ferrugineus yielded 5-[3″-(β- d -glucopyranosyloxy)propyl]-7-methoxy-2-(3′,4′-dimethoxyphenyl) benzofuran, along with the known nor -lignans 5-(3″-hydroxypropyl)-7-methoxy-2-(3′,4′-methylenedioxyphenyl)benzofuran, 5-(3″-hydroxypropyl)-7-methoxy-2-(3′,4′-dimethoxyphenyl)benzofuran, 5-[3″-(β- d -glucopyranosyloxy)propyl]-7-methoxy-2-(3′,4′-methylenedioxyphenyl)benzofuran and the lignan, dihydrodehydrodiconiferyl alcohol. All arylpropanoids isolated showed antibacterial and antifungal activities. The structures of the isolates were established by spectroscopic analysis.
Rini Ramadhani - One of the best experts on this subject based on the ideXlab platform.
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Short Communication: Weak delineation of Styrax species growing in North Sumatra, Indonesia by matK + rbcL gene
Biodiversitas, 2017Co-Authors: Arida Susilowati, Henti Hendalastuti, Cut Rizlani Kholibrina, Rini RamadhaniAbstract:Susilowati A, Hendalastuti H, Kholibrina CR, Ramadhani R. 2017. Weak delineation of Styrax species growing in North Sumatra, Indonesia by matK + rbcL gene. Biodiversitas 18: 1270-1274. The aim of DNA barcoding is to enable precise identification of species from analysis of a unique DNA sequence of a target gene. The present study was undertaken to develop barcodes for different species of Styrax L. growing in North Sumatra, Indonesia. Four putative species of Styrax (each represented by specimens collected from two districts in North Sumatra) were evaluated using two regions in the plastid genome (matK and rbcL) in order to discriminate them at species level. Results showed that matK yielded 891 bp after alignment, however there was no precise identification to species level. The matK gene only differentiated the four recognized species into two groups, each group consisted of two of the species. The rbcL gene yielded 588 bp and showed no variation between species: that is,it determined all the currently recognized species to be of one and the same haplotype. Furthermore, combined matK + rbcL gave a similar grouping result to that for the matK gene considered alone. Considering the overall performance of these loci, we suggest matK + rbcL is not strong enough to determine Styrax growing in North Sumatra to the species level as distinguished on morphological grounds. These findings show the necessity of finding other candidate genes or markers that can potentially be helpful in delineating the various species of Styrax growing in North Sumatra, as well as other related Styrax genera.
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short communication weak delineation of Styrax species growing in north sumatra indonesia by matk rbcl gene
Biodiversitas, 2017Co-Authors: Arida Susilowati, Henti Hendalastuti, Cut Rizlani Kholibrina, Rini RamadhaniAbstract:Susilowati A, Hendalastuti H, Kholibrina CR, Ramadhani R. 2017. Weak delineation of Styrax species growing in North Sumatra, Indonesia by matK + rbcL gene. Biodiversitas 18: 1270-1274. The aim of DNA barcoding is to enable precise identification of species from analysis of a unique DNA sequence of a target gene. The present study was undertaken to develop barcodes for different species of Styrax L. growing in North Sumatra, Indonesia. Four putative species of Styrax (each represented by specimens collected from two districts in North Sumatra) were evaluated using two regions in the plastid genome (matK and rbcL) in order to discriminate them at species level. Results showed that matK yielded 891 bp after alignment, however there was no precise identification to species level. The matK gene only differentiated the four recognized species into two groups, each group consisted of two of the species. The rbcL gene yielded 588 bp and showed no variation between species: that is,it determined all the currently recognized species to be of one and the same haplotype. Furthermore, combined matK + rbcL gave a similar grouping result to that for the matK gene considered alone. Considering the overall performance of these loci, we suggest matK + rbcL is not strong enough to determine Styrax growing in North Sumatra to the species level as distinguished on morphological grounds. These findings show the necessity of finding other candidate genes or markers that can potentially be helpful in delineating the various species of Styrax growing in North Sumatra, as well as other related Styrax genera.
Ghaleb Tayoub - One of the best experts on this subject based on the ideXlab platform.
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composition of volatile oils of Styrax Styrax officinalis l leaves at different phenological stages
Biochemical Systematics and Ecology, 2006Co-Authors: Ghaleb Tayoub, Isabelle Schwob, Jeanmarie Bessiere, Verornique Masotti, Jacques Rabier, Martine Ruzzier, Josette VianoAbstract:Abstract The volatile oil composition of Styrax officinalis L. leaves was investigated by GC and GC–MS during the phenological cycle of this species in a population growing wild in France. Whatever the analysed stage, yields were low 0.01–0.02%. ( E )-2-hexenal, octanol and geraniol were the main constituents in all these volatile oils. The level of sesquiterpenoids was the highest at the vegetative stage. However, the chemical composition of leaf essential oil was relatively constant during the phenological stage of this tree and 58% of the identified compounds were common at all the analysed oils.
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essential oil composition of leaf flower and stem of Styrax Styrax officinalis l from south eastern france
Flavour and Fragrance Journal, 2006Co-Authors: Ghaleb Tayoub, Isabelle Schwob, Jeanmarie Bessiere, Jacques Rabier, Martine Ruzzier, Veronique Masotti, Jeanphilippe Mevy, Gabriel Girard, Josette VianoAbstract:The essential oil composition of Styrax officinalis L. was investigated by GC and GC–MS for the first time. Oil yields were low, whichever organ was hydrodistilled. Leaf, stem and flower oils consisted of 42.2%, 41.2% and 48.7% of terpenoids, respectively. Among all the identified terpenoids, oxygenated monoterpenes were predominant in all the plant organs. The major compounds in the leaf essential oils were (E)-2-hexenal (17.6%), linalool (11.9%) and geranial (5.5%). Linalool was the major compound (26.4%) in the volatile flower oil, followed by tridecanal (9.8%) and dodecane (9.6%), while α-terpineol (17%) and eugenol (9.9%) were the main compounds in the stem essential oil. Copyright © 2006 John Wiley & Sons, Ltd.
